DC Drives suit OEM market.
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Press Release Summary:
Two-quadrant Series SLE includes 4 models with max continuous armature currents of 34, 58, 82, or 106 A, producing power outputs of 14, 24, 34, or 44 kW at 460 Vdc. Units employ closed loop control of armature current and feedback voltage to give precise control of motor torque and speed. Stall timer automatically removes power after 30 sec if required speed cannot be achieved. Demand signal may be derived from potentiometer, 0-10 V signal, or 4-20 mA loop.
Original Press Release:
Small, Low Cost DC Drive Will Suit OEMs
Arundel, England, December 2005. Sprint Electric introduces the SLE series of two-quadrant DC drives, specifically designed to suit the OEM market. They will appeal particularly to machinery manufacturers in the plastics and rubber, metals, paper and packaging and machine tool sectors. Although small in size and attractively priced, the SLE drives offer a full range of features with no compromise on reliability or performance.
Four models are available, with maximum continuous armature currents of 34, 58, 82 or 106 Amps, producing power outputs of 14, 24, 34 or 44kw at 460 V DC. The extremely small footprint of 250 mm x 204 mm helps designers produce a compact unit and makes for simple installation.
There is a wide choice of AC supply, a configurable field bridge for easy motor field voltage matching and isolated control electronics for easy connection to other drives and equipment.
The units employ closed loop control of both armature current and feedback voltage to give precise control of the motor torque and speed. A stall timer that automatically removes power after 30 seconds if the required speed cannot be achieved protects motor and drive. The SLE will provide up to 150% of the pre-set maximum current for up to 30 seconds, allowing high short-term torque during acceleration or other changes in load.
Independent control of either the current or speed loops by external inputs, allows torque or speed control applications with over-speed or over-current protection. The demand signal may be derived from a potentiometer, 0-10 V signal or 4-20 mA loop. The speed feedback signal may be selected to be the armature voltage or a shaft mounted tachometer. A comprehensive range of extra inputs and outputs are available.
From a single stand-alone drive to a complex control system using multi-drives, the SLE has all the control features required to allow users to design systems for the most demanding applications.
Company Profile:
Sprint Electric Ltd., based in England and founded in 1987, offers a wide range of DC motor control, with over fifty models covering both single phase and three phase, regenerative and non-regenerative applications. From low voltage servo performance controller to highly sophisticated fully digital three phase DC variable speed drive of many hundreds of amps, Sprint Electric products meet the demands of countless industrial applications around the globe. Sprint Electric is committed to providing innovative products backed up by a high level of customer service to the world-wide industrial market. In North America, Sprint Electric products are distributed through Bardac in the USA, and through MDA Controls in Canada.
